A5053488047- Extraction and Separation Processes
- Membrane Separation Technologies
- Membrane-based Ion Separation Techniques
- Nanomaterials for catalytic reactions
- Electrochemical sensors and biosensors
- Membrane Separation and Gas Transport
- Analytical Chemistry and Sensors
- Advancements in Battery Materials
- Phytochemicals and Antioxidant Activities
- Fuel Cells and Related Materials
- Conducting polymers and applications
- Enzyme Catalysis and Immobilization
- Biofuel production and bioconversion
- Microbial Metabolic Engineering and Bioproduction
- Bone Tissue Engineering Materials
- Recycling and Waste Management Techniques
- Adsorption and biosorption for pollutant removal
- Chemical Synthesis and Characterization
- Dental materials and restorations
- Odor and Emission Control Technologies
- Botanical Studies and Applications
- Electrochemical Analysis and Applications
- Water Quality Monitoring and Analysis
- Dental Implant Techniques and Outcomes
- Advanced Chemical Sensor Technologies
Universitatea Națională de Știință și Tehnologie Politehnica București
2016-2025
University of Bucharest
2020-2022
Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering
2021
Sapientia Hungarian University of Transylvania
2019
Middle Technical University
2018
National Institute for Research and Development in Microtechnologies
2011-2013
Gheorghe Asachi Technical University of Iași
2009
The present study aimed to assess the eighteen month follow-up patient-centered outcomes of a simple and predictable protocol for 3D-printed functional complete dentures manufactured using an improved poly(methyl methacrylate) (PMMA)–nanoTiO2. A detailed morphological structural characterization PMMA–TiO2 nanocomposite, SEM, EDX, XRD, AFM, after 3D-printing procedure post-wearing micro-CT, was also performed. Methods: total 35 fully edentulous patients were enrolled in this prospective...
The preparation of membranes from polymer solutions by the phase inversion method, immersion—precipitation technique has proved since beginning obtaining technological most versatile and simple possibility to create polymeric membrane nanostructures. Classically, involves four essential steps: Preparation a solution in desired solvent, formation film on flat support, immersion coagulation bath containing solvents, conditioning. All stages are important for prepared membrane’s nanostructure...
A sensitive electrochemical method was used for the determination of total phenolic content and antioxidant activity Echinacea purpurea extracts. In this study, 3 glassy carbon electrodes (GCE) were used: one unmodified other two newly manufactured modified with nanotubes (CNTs) chitosan (CS) in different concentrations, having following composition: 1 mg/mL CNTs/CS 5%/GCE 20 0.5%/GCE. The determinations performed on pharmaceutical forms (capsules, tablets tincture), which contain E. pururea...
The unpleasant odor that appears in the industrial and adjacent waste processing areas is a permanent concern for protection of environment and, especially, quality life. Among many variants removing substance traces, which give an smell to air, membrane-based methods or techniques are viable options. Their advantages consist installation simplicity scaling possibility, selectivity; moreover, flows odorous substances direct, automation complete by accessible operating parameters (pH,...
Chemical composition, antioxidant capacity, and antimicrobial activity of lavender essential oils (LEOs) extracted from three different varieties Lavandula angustifolia Mill. (1-Moldoveanca 4, 2-Vis magic 10, 3-Alba 7) have been determined. These plants previously patented in the Republic Moldova were cultivated an organic agriculture system northeastern part Romania then harvested 3 consecutive years (2017–2019) to obtain oils. From inflorescences complete flowering stage, LEOs by...
Membrane materials with osmium nanoparticles have been recently reported for bulk membranes and supported composite membrane systems. In the present paper, a catalytic material based on dispersed in n-decanol (nD) or n-dodecanol (nDD) is presented, which also works as an emulsion membrane. The hydrogenation of p-nitrophenol (PNP) carried out reaction separation column acid-receiving phase nanodispersion n-alcohols. variables PNP conversion process p-aminophenol (PAP) transport are follows:...
Following implantation, infections, inflammatory reactions, corrosion, mismatches in the elastic modulus, stress shielding and excessive wear are most frequent reasons for orthopedic implant failure. Natural polymer-based coatings showed especially good results achieving better cell attachment, growth tissue-implant integration, it was found that inclusions of nanosized fillers coating structure improves biomineralization consequently osseointegration, as nanoparticles represent calcium...
Abstract In this study, the biosorption of lead (Pb(II)), copper (Cu(II)), and cadmium (Cd(II)) ions from aqueous solution using waste cabbage leaves powder (CLP) was investigated as a function pH, shaking time, initial metal concentration, biosorbent dose. The maximum removal efficiency at optimum condition in single system 95.67, 92.42, 88.92 % for Pb(II), Cu(II), Cd(II) ions, respectively. These values reduced ternary systems same sequence. Langmuir extended isotherm models were found to...
The present study introduces the process performances of nitrophenols pertraction using new liquid supported membranes under action a magnetic field. membrane system is based on dispersion silver–iron oxide nanoparticles in n-alcohols hollow microporous polypropylene fibers. iron oxide–silver are obtained directly through cyclic voltammetry electrolysis run presence soluble silver complexes ([AgCl2]−; [Ag(S2O3)2]3−; [Ag(NH3)2]+) and pure electrodes. nanostructured particles characterized...
The values of hematological and coagulation biomarkers were evaluated as predictors in hospital mortality complications, patients with acute coronary syndromes (ACS). This retrospective observational study enrolled 936 ACS subjects admitted to the Clinical Emergency Hospital Oradea, Romania, between January–December 2019. Hematological parameters obtained at admission. During hospitalization, following adverse events recorded: death, ventricular rhythm disturbances, atrial fibrillation,...
Background and Objectives: Quarantine, isolation bed rest associated with COVID-19 infection favored the loss of muscle bone mass, especially in elderly patients. The current study aims to compare presence sarcopenia osteoporosis patients a recent (one month) history SARS-CoV-2 versus general population. Materials Methods: A cross-sectional was conducted which 157 were enrolled, divided into two groups, comparable structure. group (group C) consisted 86 who diagnosed respiratory within last...
The recovery and recycling of metals that generate toxic ions in the environment is particular importance, especially when these are tungsten and, particular, thorium. radioactive element thorium has unexpectedly accessible domestic applications (filaments light bulbs electronic tubes, welding electrodes, working alloys containing aluminum magnesium), which lead to its appearance electrical waste from municipal management platforms. current paper proposes simultaneous electrodes....
The membranes and membrane processes have succeeded in the transition from major technological biomedical applications to domestic applications: water recycling washing machines, of used cooking oil, recovery gasoline vapors pumping stations or enrichment air with oxygen. In this paper, neutralization condensation retention aluminum thermal power plants is studied using ethylene propylene diene monomer sulfonated (EPDM-S) containing magnetic particles impregnated a microporous hollow fiber...
The polymer-inorganic nanoparticles composite membranes are the latest solutions for multiple physicochemical resistance and selectivity requirements of membrane processes. This paper presents production polysulfone-silica microfiber grafted with titanium dioxide (PSf-SiO2-TiO2) membranes. Silica length 150-200 μm diameter 12-15 were nanoparticles, which aggregated as microspheres 1-3 μm, applying sol-gel method. SiO2 microfibers nano-TiO2 used to prepare 12% polysulfone-based nanocomposite...